Kilometers to Nautical Miles Converter
1 kilometer ≈ 0.539956803 nautical miles
1 kilometer equals 0.539957 nautical miles
How to convert kilometers to nautical miles
Feet, inches, yards and miles use the international foot (0.3048 m). Older US survey-foot records use a different definition; check the survey document before applying these factors.
nmi = km × 0.5399568035One kilometer is 0.5399568035 nautical miles, so a single multiplication converts any value.
5.39957 nmi ≈ 10 × 0.5399568035Kilometers to nautical miles conversion table
Common values in kilometers, converted to nautical miles.
| Kilometers (km) | Nautical miles (nmi) |
|---|---|
| 1 | 0.5399568 |
| 2 | 1.0799136 |
| 3 | 1.6198704 |
| 4 | 2.1598272 |
| 5 | 2.699784 |
| 10 | 5.399568 |
| 20 | 10.799136 |
| 25 | 13.49892 |
| 50 | 26.99784 |
| 100 | 53.99568 |
| 250 | 134.9892 |
| 500 | 269.9784 |
| 1,000 | 539.9568 |
About these units
kilometerkm
One thousand metres. The standard unit for road distance in most of the world.
nautical milenmi
Exactly 1,852 metres, approximately one minute of latitude. Used in marine and air navigation.
Reference: BIPM, non-SI units accepted for use with the SI.
Sources and precision
Table results are rounded to 8 significant digits; formula constants may be rounded to 10. Worked example answers use 6 significant digits. The converter starts at 6 significant digits and lets you change display precision. Calculations use the stored factors without intermediate rounding. Exact unit definitions do not make an input measurement more precise; conventional and measured factors follow the assumptions stated here.